/**
* @return overridden real descriptors (not fake overrides). Note that most usages of this method
* should be followed by calling {@link #filterOutOverridden(Set)}, because some of the
* declarations can override the other.
*/
@NotNull
public static Set<CallableMemberDescriptor> getOverriddenDeclarations(
@NotNull CallableMemberDescriptor descriptor) {
Set<CallableMemberDescriptor> result = new LinkedHashSet<CallableMemberDescriptor>();
collectOverriddenDeclarations(descriptor, result);
return result;
}
private static void collectOverriddenDeclarations(
@NotNull CallableMemberDescriptor descriptor, @NotNull Set<CallableMemberDescriptor> result) {
if (descriptor.getKind().isReal()) {
result.add(descriptor);
} else {
if (descriptor.getOverriddenDescriptors().isEmpty()) {
throw new IllegalStateException(
"No overridden descriptors found for (fake override) " + descriptor);
}
for (CallableMemberDescriptor overridden : descriptor.getOverriddenDescriptors()) {
collectOverriddenDeclarations(overridden, result);
}
}
}